You could be right at some point in the future: One issue (amongst many) is that many browsers still in use do not support Html 5. For example, IE8 only partly supports Html 5 and IE9 is not even available on most Microsoft Platforms. In this scenario, users are forced to use IE8 or switch to another browser (assuming that they know of a one that supports Html 5).
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CarnotaurusApr 26 '11 at 11:55